First, compare the prices of local jewelry stores. When you do this, you will find two types of prices 1) prices of independent jewelry stores, which would have a 25-45% markup from the wholesale price (they will check how informed you are, and based on that, they decide how much to quote you; they would aim to get as much as they can from you for the diamond they sell you); 2) prices of large chain jewelers in the mall like Jared and Kays. You will find that while these large chain jewelers offer good financing and other terms, their markups would be 80%-120% of the wholesale price. Also, usually, large chains do not have high-quality diamonds and specialize in selling low-quality diamonds for high prices to uniform consumers.
Secondly, compare the prices of diamond exchanges in your area and of large diamond districts like New York City if you are close to the area; otherwise, it is not important. You will find that your quoted prices are close to 20% above wholesale.
Third, compare the prices of online jewelry sites. There are many reputable online stores, and you can compare their prices. James Allen and Blue Nile are the biggest of them all, and you can check their prices to see how they compare to local stores' prices. You will find that their prices are around 15%/25% more than the wholesale price.
Once you have all this information, compare these prices in our diamond filter. We list over one hundred thousand diamonds from thousands of dollars on our site. Our markup is only 6-8% of the wholesale price.
One last option could also be to look for used/used diamonds. You might be able to find one for a cheaper price on eBay or Craigslist. However, one needs to be very cautious in such a scenario because you'll be dealing with individuals, not a reputable company like James Allen, and there won't be any returns/warranties, etc.
Now that we have covered the issue of how to find a wholesale diamond let’s focus on how the prices of diamonds are determined:
The Rappaport Group is a huge trading platform, and they issue monthly prices of diamonds to all registered diamond dealers. Rappaport uses the cost of mining and cutting diamonds and market demand and supply as key indicators in determining the prices of diamonds. After receiving the price matrix, dealers use it to price their diamonds. In addition, they also check the prices of other dealers on platforms like RapNet to determine how competitively they would like to price their diamonds to move them fast.